参数资料
型号: ADUC7039BCP6Z-RL
厂商: Analog Devices Inc
文件页数: 44/92页
文件大小: 0K
描述: IC MCU ARM7 BATT SENSER 32LFCSP
标准包装: 2,500
系列: MicroConverter® ADuC7xxx
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 20.48MHz
连通性: LIN,SPI
外围设备: POR,温度传感器,WDT
输入/输出数: 6
程序存储器容量: 64KB(32K x 16)
程序存储器类型: 闪存
RAM 容量: 1K x 32
电压 - 电源 (Vcc/Vdd): 3.5 V ~ 18 V
数据转换器: A/D 2x16b
振荡器型: 内部
工作温度: -40°C ~ 115°C
封装/外壳: 32-VFQFN 裸露焊盘,CSP
包装: 带卷 (TR)
Data Sheet
ADuC7039
Rev. D | Page 49 of 92
SYSTEM CLOCKS
The ADuC7039 integrates a flexible clocking system that can
be clocked from one of two integrated on-chip oscillators: a
precision oscillator or a low power oscillator.
Each of the internal oscillators is divided by four to generate a
clock frequency of 32 kHz. The PLL locks onto a multiple (640)
of 32 kHz, supplied by either of the internal oscillators, to
provide a stable 20.48 MHz clock for the system. By default,
the PLL is driven by the low power oscillator.
The core operates at a frequency of 10.24 MHz, by default.
The ADC is driven by the output of the PLL, divided to give
an ADC clock source of 512 kHz. In low power mode, the ADC
clock source is switched from the standard 512 kHz to the low
power 128 kHz oscillator.
Note that the low power oscillator drives both the watchdog
and core wake-up timers through a divide-by-four circuit. A
detailed block diagram of the ADuC7039 clocking system is
shown in Figure 20.
The two integrated oscillators can be calibrated as described in
Figure 20. ADuC7039 System Clock Generation
128kHz
DIV 4
PRECISION
OSCILLATOR
LOW POWER
OSCILLATOR
128kHz
DIV 4
PLLCON
PLL
FLASH
CONTROLLER
32kHz
PLL OUTPUT
20.48MHz
PLL LOCK
1
8
ADCMDE
CLOCK
DIVIDER
CORE
CLOCK
1
2CD
MCU
ADC
CLOCK
ADC
TIMER0
CORE
CLOCK
HIGH ACCURACY
CALIBRATION
COUNTER
PRECISION
OSCILLATOR
TIMER2
WATCHDOG
LOW POWER
OSCILLATOR
TIMER1
WAKE-UP
LOW POWER
OSCILLATOR
CORE
CLOCK
SPI
CORE
CLOCK
PLL
OUTPUT
LOW POWER
CALIBRATION
COUNTER
LOW POWER
OSCILLATOR
LIN
INTERFACE
LOW POWER
OSCILLATOR
CORE
CLOCK
08463-
019
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